Diagnostics of Soundness of Agricultural Facilities and Development of Environmental Assessment Using GIS

1.作为一个GIS系统，介绍了ESRI公司开发的“ArcInfo”。该系统能够显示地形图、空间图，检索地理信息，分析、编辑和管理三维地理数据。这些功能以软件的形式实现，并与合适的PC服务器系统配合使用。2003年，我们接受了培训，掌握了系统的操作。以福岛县古山市西田镇2km × 2.5km矩形区域为例，利用卫星图像数据进行GIS分析。该数据包含绝对平面坐标和2.5m网格点的数字高程数据。将GIS高程数据与实测的精确地理高程数据进行比较，可以看出GIS高程数据具有相当高的精度。通过引入Voxcel概念，研究了利用GIS基本网格和由基本网格导出的5m和10m网格重建模拟地形的方法。澄清了体素大小与网格大小之间的关系，得到了有用的结果。2 .利用热像仪和声发射测量技术对混凝土结构裂缝进行检测，尝试利用红外照片对任意混凝土结构表面的远距离裂缝进行检测，并对裂缝结构的声发射测量进行了研究。以长野县和新泻县为界，选取了规模约为1km^2的姬河流域进行暴雨边坡失稳原因估算试验分析。调查的目的是明确暴雨引起边坡失稳的原因。作为物性特征，选取植被指数、坡度、坡度方向、地表地质和下降地下水位5个项目（该概念在本研究中首次定义）。这5个因素在量化II型理论中作为“项”。结果显示了各项目对失效的影响程度。宽量程电磁波剖面仪地质调查技术的发展GIS应用于2004年11月23号台风暴雨造成的AWAJI岛灌溉池破坏分析

1.Construction of GIS systemAs a GIS system, "ArcInfo" made in ESRI Co. was introduced. This system is able to display topographical map, space map, retrieve geographical information, analyze, edit and manage 3-dimensional geographical data. Those functions are delivered by the form of software and works with suitable PC sever system. In 2003, we trained to master the manipulation of the system. As a case study, the satellite pictorial data of 2km by 2.5km rectangle area in Nishida town, Ko-oriyama city, Fukusima prefecture were used and GIS analysis was carried out. This data contains absolute plane coordinate and digital elevation data with 2.5m mesh point. Comparing the elevation data of GIS and measured precise geographical one, it became clear that the former has a considerable high precision. Moreover, by introducing Voxcel concept, reconstruction of the simulated topography using basic GIS mesh and 5m and 10m mesh derived from basic mesh was examined. The relationship between th … More e size of Voxel and mesh size was clarified, and the useful results were obtained.2.The detection of crack on concrete structures using thermograph and AE measurementThe detection of crack on any concrete structure surface of long distance using the infrared photograph was tried, and together with this, AE measurement of cracked structure was also tired.3.Estimation of cause of slope failure by heavy rain2 test analysis area of which size is around 1km^2 were chosen in Hime-river basin expanded around border of Nagano and Niigata prefecture. The investigation was aimed to define cause of slope failure caused by heavy rain. As characteristics of physical properties, following 5 items were chosen, i.e. vegetation index, slope inclination, slope direction, surface geology and falling water table surface(this concept was first defined in this research). These 5 factors were used as "items" in the theory of quantification type II. The results showed the degree of affection to the failure of each items.4.Development of geological survey technique using wide range Electro Magnetic wave profiler5.GIS application of failure analysis of irrigation pond in AWAJI Island caused by the heavy rain attack of Typhoon No.23 on 2004 Less